html,body,.main{
    height: 100%;
}
ul{
    list-style: none; 
}
a{
    text-decoration: none;
    color: black;
}
.zhezhao{
    position: fixed;
    z-index: 50;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba($color: #000000, $alpha: 0.4);
    display: none;
}
.main{
    display:flex;
    flex-direction: column;
    // z-index: 50;
    .topbar{
        width: 100%;
        height: 50px;
        opacity: 1;
        background-color:#EAEBEC;
        color: black;
        position: fixed;
        z-index: 50;
        top: 0;
        left: 0;
        min-width: 400px;
    }
    .box{
        flex: 1;
        &::before{
            content: "";
            display: block;
            height: 50px;
        }
        .sidemenu{
            padding: 15px;
            padding-top: 0;
            min-width: 170px;
            // border-right: 1px solid black;
            
            li{
                padding: 5px;
            }
            #homePage{
                display: block;
                // padding: 5px;
            }
            .regulate{
                // padding: 5px;
                cursor: pointer;
                .iconfont{
                    display: block;
                    float: right;
                    transition: all 0.2s;
                }
                .icon_active{
                    transform: rotateZ(180deg);
                }
            }
            .newsItem, .userItem{
                margin: 10px;
                // height: 0;
                // overflow: hidden;
                transition: all 0.2s;
                display: block;
                a{
                    display: block;
                    padding: 5px;
                }
            }
            .active{
                display: none;
                // height:80px;
            }
        }
        .content{
            padding: 15px;
            box-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
        }
        .row{
            flex-wrap: nowrap;
        }
    }
    
}